But love it or hate it, the Lost finale achieved what few shows ever manage to do: it had us invested enough to keep talking, guessing, and debating it, long after the credits stopped rolling.

Why were fans so divided about the Lost finale? Mario Perez / Disney General Entertainment Content/Getty Naveen Andrews, Maggie Grace, Yunjin Kim, Dominic Monaghan, and Emilie De Ravin on 'Lost'.

“Lost” Star Daniel Dae Kim 'Thinks' He Understands the Controversial Finale 15 Years Later (Exclusive) The two-part series finale of 'Lost' aired on May 23, 2010, and remains a hot-button ...

Few TV finales have sparked as much debate as Lost ’s. Appropriately titled "The End," the final episode aired on May 23, 2010, and left fans sharply divided over its ambiguity.

The finale of Lost aired 15 years ago, on May 23, 2010 While many viewers were left confused or unsatisfied by the ending, star Daniel Dae Kim tells PEOPLE he thinks he understands what happened ...